Concentrator.



N. MOSSBERG.

GONGENTRATOR.

APPLICATION FILED FEB.24,1912.

Patented Mar. 25, 1913.

2 SHEETS-SHEET 1.

314/012 "to; fl/wa gsze v g N. MOSSBERG.

UONCENTRATOR.

APPLICATION FILED FEB. 34, 1912.

Patented Mar. 25, 1913.

2 SHEETS-SHEET 2.

I I I 6 HOt 1121 STATES PATENT OFFICE.

Niit's messa es, or maven, coroaano.

. concn'nrnn'rron.

Application filed February Specification of Letters Patent. Patented Ma 25 1913 24, 1912., Serial No. 679,677.

To all whom it may concern Be it known that I, Name Mossenne, a citizen of the United States, residing in the city and county of Denver rado, have invented certain new and useful Improvements in Concentrators; and I do declare the following to be a full, clear, and exact "description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying. drawings, and to the characters of reference marked thereon, which form a part of this specification. v I

My invention relates to improvements in concentrators, my object being to provide an apparatus of this character which shall efficiently perform the function of separating metallic values from the gangue and which may at the same time be of simple and economical construct-ion.

My improved concentrator, speaking, consists of a' table oscillate longitudinally in such a manner as to cause the concentrates to travel toward the tail of the table", or the extremity opposite the head where the material to be treated is' fed thereto; while the gangue travels in a transverse direction, being discharged at the lower longitudinal, edge of the table, which is inclined both longitudinally and transversely.

The material to be treated, in the form of generally pulp, is discharged at the upper or highest vention, consists in the arrangement of water deflectors which extend forwardly and downwardly from the perforated wall of the wash water trough, the said deflectors consisting of strips of suitable material directed diagonally across the table, but rela-' tively short, whereby they shall not interfere with the travel of the concentrates longitudinally of the table and their discharge at the tail end thereof. These deflectors are so arranged that during the forward travel of the table, the wash water which escapes from the trough in the rear of the deflectors, is splashed thereagainst and carried rearand State of Colo suspended to the table,

wardly toward the head of the table, forming a sort of eddy actingupon the material to perform the separating function. These rearwardly directed eddies, or wash water currents, act upon the gangue to carry the latter rearwardly and downwardly toward while the concentr tes, which are heaviest, occupy the loweriggst position on the table top and are of su cient weight to resist the action of the eddies, or currents. In this way, the deflectors by producing the eddies, or currents, perform in the treatment of the material.

Another novel feature consists in the con- 'struction for regulating the oscillating movement of the table, whereby its head'ex- .tremity may be causedto occupy its highest position, either at the limit of its forward or rearward stroke. Furthermore, I cmof the table, and provide a vertically adjustable-bar equipped with openings through which the suspension chains, for instance, I ass. By the vertical adjustment of this ar the radius of the arc of travel of the head of the table may. be regulated. 7 For instance, if the bar is so adjusted as to allow a relatively long length of chain between it and the table, the radius of the arc in which the head swings will be greater, and consequently, the arc of travel will more nearly approach the horizontal, while if the rigid bar is lowered so that a relatively short length of chain is below the same, the arc of travel will'be relatively steep.

Having briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawing in which is illustrated an embodiment thereof.

In this drawing:Figure 1 is atop plan View of my improved concentrating table. In this view only the table top, together with the means for supplying wash water and pulp is illustrated, together with the troughs for receiving the concentrate and gangue discharge from the table. Fig. 2 is a vertical longit-udinalsection of the table. This section is taken on the line 2-2, Fig. 3, the parts being shown on a smaller scale line 3-3 Fig. 2. Figs. 4 and '5 are diagrammatic views, illustrating the manner of regu lating'the'swing of the head of the table by changing the length of the pitman leadthe lower, longitudinal edge of the table,.

ploy flexible suspension means at the head than Fig. 1. Fig. 3 is a section taken on' an important function connected by 20 rearwardly projecting 45 of the so beirig connected ing from the crank shaft to the Vertically disposed lever arm employed in imparting the oscillating movement to the table.

The same reference characters indicate the 5 same parts in all the views.

.Let the numeral 5 designate the frame work of the machine, consisting of bottom beams 6, upright beams 7, and longitudinally disposed top beams 8, the latter being a transverse top beam 9, which is centrally provided with a rearward pro-- jection uponwhich a lever arm 12 is fulcrumed, as shown at 13. This lever arm has a nut engaged by a screw 15, journaled 15 in the lever arm and terminating at its upper extremity in a hand wheel 16. By turning this hand wheel the nut may be caused to travel vertically, either up or down, upon the lever arm. This nut is provided with a lug 17 with which the forward extremity of a pitman 18, is pivotally connected, as shown at 19, the rear extremity of the pitman being pivotally connected, as shown at 20, with a crank 21 of a 5 shaft 22-.

The lower extremity vof the lever arm, being the extremity remote from the fulcrum 13, is pivotally connected, as shown at 23, with a rod 24, whose forward extremity is pivoted, as shown at 25, to a pair of angle brackets 26, between which the forward extremity of the rod is located, the said brackets being connected with the lower surface of the table 27. The pitman 18 is provided with aturn-buckle device 28 for regulating its length. The rod 24 is also divided, its two members being connected by a turn-buckle 29.

As the crank shaft 22 is rotated, it will be understood that a longitudinal oscillatory movement will be imparted to the table,

since the latter is suspended to swing in a longitudinal direction.

As illustrated in the drawing, the head table is suspended by flexible devices 30, whose'upper extremities are connected with a top bar 31 by means of fastening devices 32. These devices 30 have chain members 33, the lower extremities of the chains with a turn buckle 34, from which short rods 35 move downwardly, and are pivotally connected with the table on opposite sides by fastening devices 36. The

chain members of the suspension devices 30 5.5' constitute the greater length :of these devices.

These cham members pass through openings 37 formed in the opposite enlarged extremi- "ties 38 of a transvers'ehorizontally disposed bar 39, the latter being vertically adjustable 0 by means of verticall disposed screws40 'ournaled in the top ar 31, and threaded Into" the extremities of the bar 39. The upper extremity of each screw 40 is equipped with a worm wheel 41, which is engaged by 5 a worm 42 mounted on a shaft 43 journaled .these suspension devices are connected treated by in angle brackets 44 mounted on the top bar 31. The outer extremities of the shaft 44 are provided with hand wheels 45 for convenience of operation. From this description it will be understood that by raising and lowering the bar 39 the arc of travel at the head of the table during the oscillating movement of the latter, may be regulated at will, whereby this arc may be relatively abrupt, or more nearly approaching the horizontal as may be desired. The table is further suspended near the tail thereof, by means of devices 46, consisting of upper and lower members 47 and 48, connected by a turn-buckle 49. The upper members 47 of wit 1 eye bolts 50, secured to a cross bar 51, while the lower members 48 are pivotally connected, as shown at 52, with the table. These suspension devices permit a relatively long swing of the tail of the table, whereby, the arc'53 described thereby, forms a part of a relatively large circle.- No provision is made for regulating this arc, except by raising and lowering the table by the manipulation of the turn-buckle 49.. On the contrary, in the case of the suspension devices at the head of the table, the arc of swing may be changed without interfering with the position of the table, that is to say, without raising or lowering the tables head, this being accomplished by the vertical adjustment of the bar 39, through which the flexible members of the suspension devices 30 pass, as heretofore explained.

Coming now to the construction of the table proper, the same may be composed of any suitable large enough to give the desired capacity. This table, which in its entirety has been designated by the numeral 27 is suspended in such a nranner that it is both longitudinally and transversel inclined. Along its upper longitudinal e ge is formed a wash water trough 54, whose wall adjacent the material, said table being made concentrating surface 56 of the table is perforated, as shown at 57, to ,allow the water to escape to the table top for concentrating purposes. wash water from a pipe, or conduit, 58, leading from a suitable source-of supply, the passage of water through the pipe ing regulated by a valve 59. The pulpto be the tableisdelivered to the uppermost corner-( 0 of its concentrating surface by a conduit 61, leading from a source of pulp supply. Below the space 60 where .the pulp is originally discharged, a number of relatively short. baffles, 62 and 63, are arranged, theseballles being of sufiicient height to prevent pulp from passing over them whereby the pulp is caused to travel forwardly, or in the direction of thearrow a, (see Fig. 1), until it is brought within range of the water eddies indicated by the dotted This trough is supplied with the table.

' middlings table top. By

located at the tail of the table.

The uppermost corner at the tail of the table is shaped to form a diagonal line preferably parallel with the deflectors 65.- This oorner of the table is provided with an up turned flange 66, which extends downwardly and forwardly beyond the longest deflector 65, and to the extent that it extends beyond the lower extremity of the adjacent deflector 65, this flange 66 itself constitutes a deflector, and causes an eddy 67 at the tail of the table.

Extending longitudinally below the lower edge of the table is a trough 68'for receiving the gangue discharge from the lower longitudinal edge of the table.

Separated from the trough 68 by a partition 69, is a receptacle 70 forwhat may be termed middlings or material which contains some values. This middlings receptacle is separated by an adjustable partition 71 from the trough, or receptacle 72, In order that the discharge of gangue and middlingsfrom the lower edge of the table may be regulated to harmonize with changed conclitions, I employ a bar 7 3, which is located at the lower longitudinal edge of the table, and as illustrated in the drawing, a portion of it is located above the forward extremity of the gangue trough, while its forward portion extends above the middlings receptacle, and if when the table is in use the bar 73 is located as'illustrated in Fig. 1, the gangue will be discharged into the trough 68 from that portion of the lower longitudinal edge of the table rearward of the rearward extremity 74 of the bar 73, while the will enter the middlings receptacle between the forward extremity 7 5 of the bar, and the partition 71, separating the middlings receptacles from that of the concentrates. This bar, however, is provided with longitudinally arranged slots 76, through which are passed set screws 7 which are threaded into the body of the loosening these set screws, the bar may be moved forwardly, according to the requirement in treating any material.

In describing the construction diagrammatically illustrated in Figs. 4 and 5, it maybe stated that the rearwardly located full line in each of these views represents the lever arm 12, and it'is therefore, designated by the same reference character.

.the tailof the table.

at its forward limit of travel.

With this explanation, it will be understood that the part connected with this lever arm and extending rearwardly therefrom is the pitman 18, having the turn buckle 28, the said pitman leading. to the crank 21 of the shaft 22. Now if when the crank is in its uppermost position, as illustrated in Fig. 2, the turn-buckle 28 be adjusted to cause the lever arm 12 to occupy thefull line position in Fig. 4, it will follow, assuming. that the crank shaftisturning toward the left, or in the direction indicated by the adjacent arrow in Fig. 4:, that by the time the table and le ver arm have reached their rearward ln'nit of oscillation, the leverarm will be in the postion of the dotted line A, while the table will be in the position indicated by the dotted lines B, while when the table and lever arm have reached the limit of their forward stroke, the lever arm will be in the position indicated by the dotted line C while the table will be in the position below that of the full lines, the table in this case, being designated by 27, its reference character in the other views. From this, it will be understood that when the 'table has reached its forward limit of head extremity will be in its lowermost position, which will have a tendency to re-' tard, rather than facilitate the forward travel of the material from the head toward In these views, the shorter and forwardly located full lines, indicate the suspension means 30, located at the head ofthe table, the upper extremities D of each of these lines representing the point where the extremity 38 of the bar 39 engages the chains 33 of the suspension means 30. Again, so adjusted when the crank arm 21 is at its uppermost position that the lever'arm 12 shall occupy the position illustrated in Fig.

5, the 1everarm will be inthe'position in-.

dicated by the dotted line E when at its rearward limit of travel, and in the position indicated by the table will be-in its lowermost position when at its rearward limitin its highest position when at its forward limit of travel, the forward position being indicated by the dotted lines in Fig. 5 and the positionfmid-wayof its forward and ,rearward stroke being-indicated by the full lines in the same figure. Hence, when the table is at its forward limit of movement, if the pitman is adjusted, as shown in Fig. 5, the head of the table will be at its most elevated position, which will facilitate the travel of the material longitudinally of the table from the head toward the tail there of. From this explanation, the significance of regulating the length of the pitman, in its effect upon the operation of the table will be understood. It is assumed that this movement, its

if the turn buckles 18 be the dotted line F when In this event,

of travel, and

adjustment of the pitman will be made when the table is mid-way of its forward and rearward strokes, or when thecrank 21 is in the position shown in Figs. 4 and 5-;1this makes it easy to determine the proper ad.- justment, as will be readily understood.

From the foregoing description, the use and operation of my improved concentrator will be readily understood. It must be assumed that the screws 40 are so adjusted as to properly regulate the elevation of the bar 39, in order to give the head of the table theproper arc of oscillation, without changing its elevation, while the suspension decentrates,

vices 46 at the tail of the table are adjusted to give the latter its proper inclination. The forwardly located suspension devices 30 arealso vertically adjustable by means of turn-buckles 34 to regulate thev inclination of the table, bot-h longitudinally and transversely, but after this is accomplished, the arc of travel of the head of the; table, whether it shall be relatively steep, or more nearly approaching the horizontal, may be regulated by adjustingthe bar 29, as will be readily understood. It must also be assumed, that the length of the pitman 18 is so adjusted as to determine the proper height for the head of the table during its oscillating movement. If it is desired to have the .head of the table highest when at the limit of its rearwardstroke, the pitman may be adjusted, as shown in Fig. 4, while should it be considered that it would be advantageous to havefthe head of the table highest when at the forward limit of its stroke, the pitman should be adjusted, as shown in Fig. 5; while for other positions of the table, when at the forward and rearward limit of stroke, the-length of the pitman may be correspondingly regulated. For instance, if it is desired to have the head of the table at the same elevation when at both the forward and rearward limit of its stroke, and lowest when in the interme diate positions, lated, as illustrated in Fig. 2, or so that the lever arm 12 is in the vertical position when the table is in the-position mid-way of its forward and rearward strokes.

Assuming that the table is properly ad justed, wash water is fed into the trough,

58, while the 54 through the pipe or conduit to be treated material, in the form of pulp,

is discharged on the upper portion 60 -of the head of the table through the conduit 61. This material, then under the influence of the longitudinal oscillation of the table and the action of the deflectors (55 upon the wash water will be separated into gangue and conthe gangue being lightest and therefore acted on by the eddies, or currents ('37 produced by the deflectors 65, will be carried transversely downwardly over the table and discharged from its rearward edge into the pitman should be regu the trough 68, forward of the separating bar 73, while the concentrates will travel longitudinally toward the tail of the table and be discharged into the trough 72; while if there is an intermediate grade, or middlings produced, it will be discharged into the receptacle 70, intermediate the gangue receptacle 68 and the concentrate receptacle 7 2.-

The arrows 0 in Fig. 1, indicate the travel of the material transversely, downwardly on the table at its headextremitv where the short bafiies 62 and 63 are locate By the timethe portion of the material acted on by these battles leaves the lowermost battle, the values will be entirely sepafated therefrom, a d the gangue will pass over the lower lo gigitudinal edge of the table, as indicated by the arrow d, it being assumed that the concentrates, or values, will have been completely separated from the gangue before the lowermost baille is reached, and be traveling toward the tail of the table under the influence of the action of the latter, as heretofore described.

Referring to Fig. 1 of the drawing, the dotted line 78 extending lengthwise of the table, indicates approximately the transverse center of the concentrates area as they travel forwardly toward the trough, or concentrates receptacle, 7 2. These concentrates occupy a fairly well defined longitudinal area, extending on opposite sides of the dotted line 78. The area below this line extends approximately to the dotted line 79. The space between the dotted line 79 and a line 80, may be designated'as the area of the table occupied by the middlings, while the space at the right of the line 80, may be termed the area occupied by the gangue which is discharged from the lower longitudinal edge of the table between the point where this line intersects the said edge, and a point opposite the arrow (1. The lines 7 8, 79 and 80, are not intended to be absolutely accurate, since it is well known that under different circumstances the relative areas occupied by the different grades of material will vary considerably. These lines are, however, intended to give an approximate idea of the areas occupied by the respective grades of material, and it is believed they will, to some extent, facilitate a proper understanding of the principle of operation of my improved construction. he extreme ends 81 of the 'bar 39 enter grooves 82, formed in the up-right beams 7 of the frame Work, whereby the bar 39 is held against displacement direction. This construction prevents any crum bar 39 were not anchored, as just explained. In further explanation of the operation of the table, it may be stated that by in a longitudinal virtue of the vertical adjustment of the nut 14 on the lever arm 12, the length of the tables stroke is regulated.

i The baflle plate, or wall 62, makes asort of receptacle at the upper right hand corner of the table (see Fig. 1), for the pulp to be passing transversely lower longitudinal edge of the table too where it is acted on by .as to direction-as to cause eddy abruptly. By the employment of these bafiies the heavy material containing the values is caused to travel forwardly and enter the concentrates area of the table,

the eddies, or currents, 64:. Any material which leaves the lowermost baflle, taking the direction of the arrow 03, will be devoid of values, as heretofore explained.

Having thus described my invention, what I claim is:

1. In a concentrator, a longitudinally reciprocating table inclined longitudinally toward the concentrates discharge end and also transversely, means for introducing pulp at the upper end and wash water along the upper side edge of the table, and deflectors upon the upper surface of the table adso arranged jacent the upper side edge and currents to flow diagonally across and toward the upper end of the table, and spaced baffle plates mounted upon the surface of the'table, said plates being of" sufficient height to prevent pulp at the upper end and pulp from passing over them, and extending downwardly from the head of and parallel to the length of the table, said plates increasing in length, towardthe'lower side of the table.

2. In a concentrator, a'longit-udinally reciprocating table, inclined downwardly toward the concentrates discharge end and also transversely, means for introducing wash water along the upper side of the table, and deflectors projecting from and extending along the table surface and inclined downwardly to ward the lower side and toward -the concen-' trates discharge end, said deflectors being adapted to create eddy currents trates.

3. In a concentrator, a longltudlnally reward one side and toward also transversely,

diagonally against the longitudinal flow, of concentable surface adjacent the upper side edge of the table and inclined diagonally toward the lower side and toward the concentrates discharge end, said deflectors being adapted to create eddy currents diagonally against the longitudinal flow of concentrates.

In a concentrator, a longitudinally reciprocating table inclined downwardly toward one side and toward the concentrates discharge end, means for introducing pulp at the upper end and wash water along the upper side edge of the table, and deflectors projecting from and extending along the table surface near the upper side edge, said deflectors being parallel and suitably spaced,

and inclined downwardly toward the lower' side and toward the concentrates discharge end, and being adapted to create eddy currents diagonally against the longitudinal flow of concentrates.

5. In a concentrator, a longitudinally reciprocating table inclined the concentrates discharge end, means for introducing pulp at the upper end, and wash water along the upper side edge of the table, and deflectors projecting from and extending along the table surface near the upper side edge and being inclined dewnwardly toward the lower side and toward the. concentrates discharge end, and increasing in 1% toward the tail of the table, the said deflectors being adapted to create diagonally against the longitudinal flow of concentrates.

downwardly tongth from the head eddy currents 6. In a concentrator, a longitudinally reciprocating table inclined longitudinally toward the concentrates discharge end and means for introducing pulp at the upper end and wash-water along the upper side edge of the table, and deflectors upon the upper surface of the table adjacnt the upper side edge and so arranged,

as to direction as to cause 'eddy currents to flow diagonally across and toward the upper end of the table, said deflectors being adjustable as to direction.

In testimony whereof I affix in presence of two witnesses.

NELS MOSSBERG.

Witnesses:

SoLoN J. BoUeH'roN, F. E.- Bo'wnN.

my signature 

